MIM is the new name of the next major release for the formerly called - Forefront Identity Manager (FIM). We schedule MIM release to the first half of calendar year 2015.

MIM (like FIM 2010 R2) will be part of the Azure Active Directory Premium (AADP) offering. So if you are already an AADP subscriber, you can benefit from the existing FIM capabilities and upcoming MIM goodies.

MIM is an on-prem Identity and Access Management (IAM) system. As such it reduces the complexity of managing the identity lifecycle in organizations. This is done by automating some key IAM tasks, including:

Provisioning and synchronizing identities among heterogeneous directories and systems